Q.

The oxidation state of Barium in Ba(H2PO2)2 is      

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a

+2

b

+1

c

-1

d

+3

answer is B.

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Detailed Solution

  • Let us assume X be the oxidation state of barium (Ba) in Ba(H2PO2)2.   
  • Phosphorous (P) exists in +1 oxidation state, hydrogen and oxygen possess +1 and -2 

                    X+4(1)+2(1)+4(-2)=0

                    X+4+2-8=0

                    X=8-6=2

 

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